#66280D
Closest named color: Chestnut (#742802). oklch(36.2% 0.097 41.6), rgb(102, 40, 13).
Aa
White text reads best on this color (11.20:1).
About this color
#66280D is a dark, moderately saturated brown. In OKLCH its lightness is 36%, its chroma 0.097 and its hue 42°. Its hue sits on the warm side of the wheel. The nearest named color is Chestnut (#742802), ΔE 0.030 away. White text reads best on it, at 11.20:1.
| Hue family | Browns |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.097) |
| Temperature | warm |
| Nearest name | Chestnut (#742802) |
| Black text | 1.87:1 |
| White text | 11.20:1 |
Values
| HEX | #66280D |
| RGB | rgb(102, 40, 13) |
| HSL | hsl(18, 77%, 23%) |
| OKLCH | oklch(36.2% 0.097 41.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #66280D | 11.20:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #66280D | 1.87:1 | Fails | Lc 8.6 | Not readable |
| #66280D text on white | 11.20:1 | AAA | Lc 95.3 | Preferred for body text |
| #66280D text on black | 1.87:1 | Fails | Lc -7.4 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#FCF3F0
oklch(97% 0.011 39.4)
-
Step 100
100
#F7E6DF
oklch(93.7% 0.021 43.9)
-
Step 200
200
#F2D1C5
oklch(88.5% 0.041 41)
-
Step 300
300
#EAB29C
oklch(80.9% 0.072 42.4)
-
Step 400
400
#DD8766
oklch(70.7% 0.116 41.6)
-
Step 500
500
#D2663A
oklch(63.2% 0.148 41.7)
-
Step 600
600
#BD4910
oklch(55.5% 0.162 41.5)
-
Step 700
700
#A23A00
oklch(49% 0.149 41.7)
-
Step 800
800
#843107
oklch(42.7% 0.124 42)
-
Step 900
900 (this color)
#66280D
oklch(36.2% 0.097 41.6)
-
Step 950
950
#3F1B0C
oklch(27.1% 0.061 42.2)
#66280D with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #3A3209 | 0.093 |
| Deuteranopia (no green cones) | #49400B | 0.084 |
| Tritanopia (no blue cones) | #711923 | 0.048 |
| Achromatopsia (no color) | #3B3B3B | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66280D
#66280D
oklch(36.2% 0.097 41.6)
- #004556
#004556
oklch(36.2% 0.066 221.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #66280D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chestnut #742802 ΔE 0.030
- Reddy Brown #6E1005 ΔE 0.041
- Blood #770001 ΔE 0.056
- Maroon #800000 ΔE 0.065
- Claret #680018 ΔE 0.066
- Purple Brown #673A3F ΔE 0.067
- Wine Red #7B0323 ΔE 0.072
- Mud Brown #60460F ΔE 0.080
Use #66280D in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.